Definitely, Samsung Galaxy A50 is not waterproof. Though it has a non-removable back cover, still it is not waterproof. It may sustain a few splashes of water, but it will not withstand a drop in water. IP67 or IP68 certification is not very easy to attain. All the ports, SIM stray, and speakers need to be water proof and ensure no water penetrates. You need to be careful while using your phone,if it drops in water, you definitely need to get a new one.